Carmarthen Climate by Month
The weather in Carmarthen sees moderate temperature fluctuations over the course of a year.
Temperatures can be pleasant at the high end
to roughly cold at the low end.
It is also known for its large amounts of rainfall.
Let's now guide you through the climate details for a complete overview.
Average day and night temperature
The climate in Carmarthen experiences moderate temperature changes, with mild shifts between seasons. Typically, daytime temperatures range from a pleasant 20°C in July to a chilly 9°C in the coolest month, February. Nights are cooler, with temperatures generally dropping to 4°C, particularly during the colder months.
The mean minimum and maximum temperatures throughout the year
Precipitation and rainy days
Carmarthen experiences significant rainfall throughout the year, averaging 1306 mm of precipitation annually. Carmarthen offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between December (139 mm) and April (84 mm) is not too significant, making the climate enjoyable for visitors and residents alike.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
The best time of year to visit Carmarthen in the United Kingdom
Other facts from our historical weather data:July has an average maximum temperature of 20°C and is the warmest month of the year.
The coldest month is February with an average maximum temperature of 9°C.
December tops the wettest month list with 139 mm of rainfall.
April is the driest month with 84 mm of precipitation.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
